Consider Table 2-1 in the textbook, which lists the specific gravities of various substances.

(a) Explain the difference between specific gravity and specific weight. Which one (if any) is dimensionless?

(b) Calculate the specific weight of all the substances in Table 2-1. For the case of bones, give answers for both the low and high values given in the table. Note: Excel is recommended for this kind of problem in which there is much repetition of calculations, but you are welcome to do the calculations by hand or with any other software. If using software like Excel, do not worry about the number of significant digits, since this is not something easy to modify in Excel.

(c) As discussed in the text, there is another related property called specific volume. Calculate the specific volume of a liquid with \(\mathrm{SG}=0.592\).

TABLE 2-1 The specific gravity of some substances at 20C and 1 atm unless stated otherwise Substance SG Water 1.0 Blood (at 37C) 1.06 Seawater 1.025 Gasoline 0.68 Ethyl alcohol 0.790 Mercury 13.6 Balsa wood 0.17 Dense oak wood 0.93 Gold 19.3 Bones 1.7-2.0 Ice (at 0C) 0.916 Air 0.001204